My settings for evernote-clearly.

evernote-clearly.css

/**
 * CSS theme for the Clearly browser extension by Evernote.
 * See: www.evernote.com/clearly/
 * 
 * Additional options used alongside this CSS:
 *   Body font:             Droid sans
 *   Header font:           PT Serif
 *   Monospace font:        Inconsolata
 *   Background:            #EDEDED
 *   Foregound:             #444444
 *   Links:                 #F78418
 *   Base Font Size:        16px;
 *   Line Height:           1.7em;
 *   Line Width:            38em;
 *   Base CSS:              Newsprint;
 *   Links As Footnotes:    On Print;
 *   Text-align:            justify;
 *   Large Graphics:        Show Always;
 */

#text blockquote { 
    border-color: #bababa; 
    color: #656565; 
}
#text thead { 
    background-color: #dadada; 
}
#text tr:nth-child(even) { 
    background: #E0E0E0; 
}
#text th { 
    border-bottom: 1px dashed #888; 
}
#text hr { 
    border-color: #c5c5c5; 
}
#text code, 
#text pre { 
    padding: 0.5em 1em; 
    background-color: #E0E0E0; 
    border-radius: 6px;
    word-wrap: break-word;
}